Knife sheath



FIG. 1 is a left-side perspective view of the knife sheath.

FIG. 2 is a left-side view of the knife sheath.

FIG. 3 is a right-side view of the knife sheath.

FIG. 4 is a top view of the knife sheath.

FIG. 5 is a bottom view of the knife sheath.

FIG. 6 is a rear view of the knife sheath; and,

FIG. 7 is a front view of the knife sheath. 

CLAIM The ornamental design for a knife sheath, as shown and described. 